9166565262161 has 4 divisors (see below), whose sum is σ = 9166577367024. Its totient is φ = 9166553157300.

The previous prime is 9166565262139. The next prime is 9166565262191. The reversal of 9166565262161 is 1612625656619.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9166565262161 - 2¹⁴ = 9166565245777 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9166565262097 and 9166565262106.

It is not an unprimeable number, because it can be changed into a prime (9166565262191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4834895 + ... + 6458276.

It is an arithmetic number, because the mean of its divisors is an integer number (2291644341756).

Almost surely, 2^{9166565262161} is an apocalyptic number.

It is an amenable number.

9166565262161 is a deficient number, since it is larger than the sum of its proper divisors (12104863).

9166565262161 is a wasteful number, since it uses less digits than its factorization.

9166565262161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12104862.

The product of its digits is 6998400, while the sum is 56.

The spelling of 9166565262161 in words is "nine trillion, one hundred sixty-six billion, five hundred sixty-five million, two hundred sixty-two thousand, one hundred sixty-one".